Machine for refining paper and pulp



2 Sheets-Sheet L. H. WESSEL MACHINE FOR REFINING PAPER AND PULP Filed July-2, 1927 March 26, 1929.

I I I I I I I I I I n I I I I I I I I I I I I I I I I n u lua w/j Wesse/ I N V EN TOR.

A TTORNE Y.

all

Patented Mar. 26, 1929.

1: STATES PATENT OFFICE.

LUDWIG: H. WESSEL, 0F LANCASTER, OHIO, ASSIGNOB TO THE HERMA NN MANUFAC- TUBING COMPANY, 0]? LAN OASTER, OHIO, A CORPORATION OF OHIO.

MACHINE FQR REFINING PAPER AND PULP.

Application filed July 2,

My invention relates to machines for refining paper and pulp and, more particularly, to a machine facilitating the removal of the plug and shell liners that form a part of such machine.

Heretofore, the removal preparatory to renewal or repair of such plug and shell liners has been very difficult and an operation requiring much time and labor. Such operation has required that the entire machine, including the bearings in which the shaft is supported and rotated, be entirely taken apart. Also, removal or renewal of the plug liner has often necessitated removing the plug body from the shaft on which it is disposed.

It has frequently been found when the machine, including the shaft supporting bearings, has been-completely disassembled and then reassembled that the shaft will not be in proper alignment in the supporting bearings. Also, it has been found very difficult to replace the plug body, earned by the shaft, so that the plug liner will not be out of line with the shell liner, which would be detrimental to a perfect grinding operation.

Furthermore, in disassembling the supporting bearings to remove the driving shaft, foreign matter is often left in the bearings when they are reassembled. It is well known that the driving shaft, in a machine of this type, revolves at a righ rate of speed and any foreign-matter in the bearings, whether they be of roller or ball type, will destroy these hearings in a short space of time. Much time and labor would, necessarily, be expended in replacing these worn out bearings and properly aligning the shaft and the plug body mounted thereon.

Together with the above undesirable fea tures, removal of the plug body from the machine, to replace or repair the plug or shell liner, has heretofore required that the packing glands or boxes at the points where the shaft enters and emerges from the Inachine be disassembled and the packing removed from the shaft. It is obvious that some such packing is necessary at these points to prevent leakage and it will-be clear, to those familiar with the art, that to remove and replace such packing each time 1927. Serial No. 203,038.

the machine is disassembled will require an additional expenditure of time and labor. The time that has been required in removlng the plug and shell liners for renewal or repair and the consequent loss in production has been an important item in the expense of operating this type of machine, aside from the cost of the labor. It is theprimary Ob ect of my invention to provide a paper and pulp refining machine whereby the plug and shell liners may be removed for renewal or repair without completely disassembling the machine with the resultant saving in time. labor and expense. I

Another object of my invention is to provide a paper and pulp refining machine of such construction that it will be unnecessary to disassemble the bearings or remove the packing from the shaft when removing the plug body from the machine preparatory to renewal or repair of the plug or shell liners. Other objects of my invention will appear in the following detailed description and the preferred embodiment of my invention will 7 be seen in the accompanying drawings wherein similar characters of reference designate corresponding parts and wherein:

Figure 1 is a view, partly in section, of a refining machine constructed in accordance with the idea disclosed by my invention.

Figure 2 is a view, partly in section, showing the means for properly positioning and rigidly securing the shell liner to the outside shell of the machine.

Figure 3 is a view, also partly in section, of the rear bearing.

Figure 4. is aview, partly in section, showing the plug body, with the plug liner thereon, partially removed from the machine.

Figure 5 is a view, partly in section, showing the plug liner partially removed from the plug body.

Figure 6 is an end view of the packing gland taken on the line 6 6 of Figure 1.

With reference to the drawings, I have shown a paper refining machine of the type commonly known as a Jordan refining engine comprising an outer shell or casing 1 and a machine support 2 integrally formed there- 100 with. This machine is of ordinary construction in that there is a driving shaft 3 through the center thereof and a plug body .4 disposed on such shaft. The plug body 4 has a plug liner 5 surrounding its outer surface which liner is adapted to coact with a shell liner 6, as is customary in such machines. Such plug liner 5 is rigidly secured to the plug body 4 by the clamping means 7 and the shell liner 6 is rigidly secured to the outer shell or casing 1 by the clamping means 8 that is similar to the clamping means 7. The last named clamping means is best shown in Figure 2.

Packing glands 9 and 9, designed and adapted to prevent leakage around the shaft 3 at the points where this shaft enters and leaves the casing 1, are removably secured to the ends of the casing by means of semicircular plates 10. Such semi-circular plates 10 fit in an annular groove 11 around the outer periphery of the packing glands or boxes 9 and 9' and may be rigidly attached to the ends of the casing 1 by the screw bolts 12 or other well-known means. The packing glands or boxes may be prevented from rotating in any preferred manner. As shown in Figure 1, a screw bolt 13 is provided for moving the plate 14 to compress the packing 15 around the shaft 3 and also provide a means whereby the packing around the shaft may be renewed.

At any desired distance from the opposite ends of the outer shell 1 are the bearings 16 and 17. The bearing 16 is obviously larger than the bearing 17 for the reason that it supports a greater weight than the bearing 17 and because the means for adjusting the plug body, horizontally is integral therewith, as will be hereafter described and also for the reason that the bearing 17 must be small enough to pass through the small end of the plug liner 5, as will be shown hereafter. These bearings may be either of the ball or roller type and are adapted to hold the shaft 3 in alignment and, also, to act as supporting members for the shaft 3 and the plug body 4 disposed thereon.

To preventseparate movement of the bearings 16 and 17 along the horizontal axis of the shaft 3, I have provided rings 18 that cooperate with annular grooves in the shaft 3 and annular grooves in the bearing, as best shown in Figure 3. Cap pieces 19 hold the bearings 16 and 17- against vertical movement but the bolts 20 that secure these cap pieces 19 to the frame 2 are preferably made slidable in mortised grooves or the like in the frame 2 so that the bearings 16 and 17 with the cap pieces 19 thereon may be horizontally adjustable. Since the bearings are held against separate movement along the horizontal axis of the shaft 3, it will be clear that the bearings 16 and 17 and the shaft 3 must be horizontally adjustable as a unit.

The end of the shaft 3 that is adjacent the bearing 16 is provided with a preferably centrally located clearance hole 23 extending lengthwise from the end thereof. A threaded rod 21 passes through a nut 22 that forms complementary part of the bearing 16 and into the clearance hole 23. Mounted on the outer end of the rod 21 is a hand wheel 24 held thereon by a nut 25. Intermediate the nut 22 and the hand wheel 24, the rod 21 is supported by a collar or hearing 26. The

collar or bearing 26 is a unitary part of the head 27 which is removable and also forms a part of the supporting structure 2. The purpose of this threaded rod 21 is to adjust the plug 4, with the plug liner 5 thereon, longitudinally to take up the space caused by the Wear on the knives of the plug and shell liner. It will be clearly seen that rotation of the hand wheel 24 will move the shaft 3 with the plug body 4 thereon and the bearings 16 and 17 as a unit. A set screw 28 is provided in the nut 22 to hold the threaded rod 21 in the desired position of adjustment.

A motor or some other suitable power means may be attached to the end of the shaft 21 that extends outwardly from the small end of the casing 1. With reference to Figure 1 of the drawings, it will be seen that in this instance I have provided a coupling 30 by which a motor may be directly connected to the shaft 3. However, it will be clearly understood that my invention is not limited to any specific manner of rotating the shaft 3 and the plug body thereon.

In removingthe plug body and the liner thereon from the machine preparatory to the removal of the shell liner, the sequence of operations hereinafter set forth may be followed if desired. First the coupling 30 is disconnected from the driving shaft 3. Then the caps 19 are removed from the bearings 16 and 17, which will permit the bearings to move freely longitudinally with the shaft 3. After the shaft 3 has been released from the motor or power means, and the bearings 16 and 17 have been released from their connection with the supporting structure 2, the packing boxes or glands 9 and 9' may be released from the casing 1 by spreading the semi-circular plates 10. Removal of the semi-circular plates 10 may be accomplished by removing the screw bolts 12 whereupon the sections of the plate 10 may be moved out of the annular grooves in the packing boxes or glands.

The hand wheel 24 is next removed from the threaded rod 21 by removing the nut 25 on the end thereof. Then the head 27 is slidably removable by taking out the screw bolts 29.

Removal and release of the various parts as previously set forth will permit the shaft 3 with the plug body 4, the bearings 16 and 17 and the packing boxes or glands 9 and 9' to be removed from the casing 1 as a whole. This is possible since the bearing 17 and the packing box or gland 9 are of such size that they Wlll pass freely through the opemng in the small end of the casingl. The above are shown partially removed from the casing 1 in Figure 4. It will be obvious that with the plug body outside of the casing it will be comparatively easy to unclamp and remove the shell liner 6 from the casing 1. All that is necessary to remove the shell liner 6 is to remove the screw bolt 31 and the clamp 8, shown in Figure 2, and slide the shell liner6 out of the casing 1.

Referring to Figure 5 of the drawings, I have shown the plug liner 5 as being partially removed from the plug body 4. As clearly seen in this figure, the bearing 17 and thepacking box or gland 9 will pass freely through the small end of the plug liner 5. Thus, all that is required to remove the plug liner 5 from the plug body 4 is to remove the screw bolts 32 and the clamps 7 whereupon the liner 5 may be removed from the plug body.

By reference to the preceding description and the drawings attached hereto, it will readily be understood that I have provided a machine'whereby the plug or shell liners may be removed for renewal or repair in a minimum of time and with a small amount of effort. It will be clear that, in providing means whereby the shaft bearings, packing boxes and glands and plug body may be removed as a whole, I have eliminated a great amount of the possibility of the various parts being disaligned when the machine is reassembled. It will also be clear that, by leaving the bearings assembled on the shaft 3, there will be very little danger of any foreign matter obtaining access to the inner or working parts of these bearings.

Many changes ma .be made in the details of my invention wit out departing from its scope.

Having thus described my invention, what I claim is:

1. In a refining engine, a' casing, a packing gland mounted in the hole of said casing and means for supporting said packing gland in said hole and normally preventing removal therefrom, said means being removable to permit removal of said packing gland as a unit.

'2. In a refining engine, a casing having a hole therein, a packing gland, and means for normally preventing passage of said packing gland through the holes of said casing, said packing gland being removable as a unit. I I

.3. A refining engine comprising a casing, interior mechanism, and a removable head for said casing, said head carrying a packing'gland removable therefrom as a unit.

4. 'In a refining engine, a support, a casing mounted upon said support, a shaft, a plug body mounted on said shaft and disp'osed within said casing, bearings mounted body mounted on a shaft and disposed within said casing, packing glands mounted on said shaft and means permitting the removal of said shaft, plug body and packing glands from said casing as a unit.

7. In a refining engine, a support, a shaft, bearings mounted on said shaft, said bearings being longitudinally movable along said support, and means for preventing vertical movement of said bearings with relation to said support.

8. In a refining engine, a support, a shaft, bearings mounted on said shaft, said bearings being longitudinally movable along said support, and means for preventing vertical movement of said bearings with relation to said support, said last-named means being longitudinally adjustable.

9. Ina refining engine, a shaft, a tapered plug body mounted thereon, a liner mounted on said taperedplug body, a bearing mounted on said shaft adjacent the smaller end of 'said tapered plug body, said liner being removable from said tapered plug body without removing said hearing from said shaft.

10. In a refining engine, a shaft, a tapered plug body mounted thereon, a liner mo'unted on said tapered plug body, a packing gland mounted on said shaft adjacent the smaller end of said tapered plug body, said liner being removable from said tapered plug body without removing said packing gland from said shaft. 7

11. In a refining engine, a shaft, a tapered plug body mounted thereon, a liner mounted on said tapered plug body, a packing gland and a .bearin mounted on said shaft adjacent the sma ler end of said tapered plug body, said liner being removable from said tapered plug body without removing said packing gland or said bearing from said shaft.-

12. In a refining engine, a casing having a hole therein, a packing gland, and means for normally preventing passage of said packing gland through the holes of said casing, said means being removable to permit passage of said packing gland through one of the holes of said casing as a unit.

13. In a refining engine, a casing, a shaft disposed within said casing, a packing. gland mounted on said shaft and closing one end of said casing, and means for holding said means whereby said shaft, plug, packing gland, and bearings may be removed from said exterlor unit as an entlty.

16. In a refining engine, a shaft, a plug body mounted thereon, a liner mounted on said plug body, a bearing mounted on said shaft, said liner being removable by passing over said bearing without removing said bearing from said shaft.

17. In a refining engine, a shaft, a plug body, a liner mounted on said plug body, a packing gland mounted on said shaft, said liner being removable from said plug body by passing over said packing gland without removing said packmg gland from said shaft 18. In a refining engine, a shaft and bearings on opposite ends thereof, said shaft and bearings being longitudinally adjustable as a unit.

In testimony whereof I, hereby, affix my signature.

LUD'WIG H. VESSEL.

DISCLAIMER 1,706,944.Ludwig H. Weasel, Lancaster, Ohio. MACHINE FOR REFINING PAPER AND PULP. Patent dated March 26, 1929. Disclaimer filed December 30, 1929, by

the asslgnee, The Hermann Manufacturing Company.

Hereby enters this disclaimer to the claims in said specification which are in the following Words, to wit:

2. In a refining engine, a casing having a hole therein, a packing land, and means for normally preventing passage of said packing gland through the holes of said casing, said packing gland being removable as a unit.

, 3. A refining engine comprising a casing, interior mechanism, and a removable head for said casing, said head carrying a packing gland removable therefrom as a unit.

6. In a refining engine, a casing, a plu body mounted on a shaft and disposed within said casing, packing glands mounte on said shaft and means permitting the removal of said shaft, plug body and packing glands from said casing as a unit.

13. Ina refining engine, a casing, a shaft disposed Within said casing, a packing gland mounted on said shaft and closing one end of said casing, and means for holding said packing gland in operative position on said casing, said means being adjustable to permit removal of said packing gland structure as a unit.

18. In a refining engine, a shaft and bearings on opposite ends thereof, said shaft and bearings being longitudinally adjustable as a unit.

[Ofiicz'al Gazette January 14, 1930.] 

